Energy-Saving Inertial Drive for Dual-Frequency Excitation of Vibrating Machines

Volodymyr Gursky, Igor Kuzio, Pavlo Krot and Radoslaw Zimroz
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Volodymyr Gursky: Institute of Engineering Mechanics and Transport, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Igor Kuzio: Institute of Engineering Mechanics and Transport, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Pavlo Krot: Faculty of Geoengineering, Mining and Geology, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
Radoslaw Zimroz: Faculty of Geoengineering, Mining and Geology, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland

Energies, 2020, vol. 14, issue 1, 1-11

Abstract: The low energy efficiency and excessive power of electric motors of large-scale vibrating machines for processing bulk materials motivated a new design of the inertial drive. This drive consists of one motor and two coaxial unbalanced masses, whose rotational frequencies are related in the ratio 2:1. This approach allows for a generation of the excitation force with variable amplitude and frequency, which changes depending on the inertial characteristics and shaft rotation frequency and does not relate to the phase difference of the unbalanced masses. Because of this, the symmetry axis of the resulting vector hodograph can be changed. The spectral composition of the exciting force up to 200 Hz contains higher harmonics, the energy share of which is 25.4% from the 2nd harmonic and 14.1% from the 3rd and higher harmonics that correspondingly improves bulk material treatment in comparison to single-frequency vibrators. The finite element model is used for checking the strength capacity of the most loaded units of a dual-frequency drive. Its use allows the realization of complex trajectories of motion that are more technologically efficient for variable parameters of the treated media and energy saving in sieving screens and other vibrating machines.

Keywords: sieving screen; inertial vibrator; dual-frequency; spectrum; FEM simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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